BBR Motorsports, Inc - Info by Make and Model

Honda CRF100F (XR100)

The Honda CRF80/CRF100 was first introduced in 1979 as the XR80 and 1981 as the XR100. The bike was an updated version of the super popular XR75s of the 1970s. Honda transformed the 80/100 into more of a play bike as the 2-strokes took over on the racing side. The XR80/100 engines are some of the best 4-stroke engines ever designed. They are super light, high revving, and dead reliable. The first big change for the XRs came in 1985 with the introduction of the single shock and plastic gas tank. In 1992 they received an electronic ignition that made the world a happier place. In 2001 they received a complete body work makeover and again in 2004 with the name being changed to CRF. Let’s face it; the CRF80 and CRF100 are where all backyard races were started. From LangTown to the MiniMoto SX, BBR has been there pounding laps with the best of them. The must have items are the chain guide, cradle, exhaust system, bore kit, and shifter. BBR has many more items for your XR/CRF to help you become the king of your backyard so feel free to give us a call.

This page has some popular links to help you navigate our website for information on the Honda CRF100F (XR100) and help you find what you are looking for. If you have any questions, please feel free to contact us via e-mail or give us a quick phone call. Our staff is ready and waiting to help you make the most of your motorcycle.

Honda CRF100F (XR100) introduction video

Honda CRF100F (XR100) FAQ

Jetting Chart:

BBR Jetting Chart

OEM Honda CRF100F (XR100) Specs

Displacement	99.00cc
Bore and Stroke	53.0 x 45.0 mm
Compression Ratio	9.4:1
Spark Plug	NGK CR6HSA
Valve Clearance	IN: .002" EX: .002"
Carb/main jet/pilot jet	22mm Keihin / 92 main / 35 pilot
Transmission ratios	3.083 / 1.882 / 1.400 / 1.130 / 0.923
Oil Capacity/Type	1.06 US quarts/10W-40
Chain size/front sprocket/rear sprocket	#428 chain; 14T/50T
Front tire size	2.50-19
Rear tire size	3.00-16
Seat height	30.9 inches
Wheel Base	49.4 inches
Weight	174 lbs.
Part diagrams link	Honda CRF100F (XR100) Parts Diagrams (MotoSport.com)
Service manual link	Honda CRF100F (XR100) Service Manual (RepairManual.com)